Not very versed well in essential oils- I had bought a set similar to this with less options from another seller and found out while searching for more variety that particular seller was not selling a true essential oil. According to the reviewers for this, they are. I can definitely tell a difference between the two, but my favorite thing about this set is that they are MUCH easier to pour. Several drops come out vs. none at all with my other set, so that makes my life a fraction easier. The scents were great and loved the guide book that came with it, although I wish it had included more information than the little blurb they write per scent- like specific ways to use it instead of just the effects. Great product and will definitely only buy from Natrogix from now on!